I've read few posts, and I'm still having troubles with adding properties to a class in runtime. It should be simple, because I have a class like this:
public class MyClass
{
String Template;
String Term;
}
During runtime, I have to add few attributes, like Phone, Email (it depends...). Could someone please explain me how to add these properties during class initialization?
Srecko
I don't think adding a property is the right thing to do here.
The attributes like "Email" or "Phone" are just some additional pairs of a key and a value. You could use a Dictionary, but that would prevent you from using a key more than once (more than one email address for a contact for example). So you could just as well use a List<KeyValuePair<string, string>>. Like that:
public class MyClass
{
String Template;
String Term;
public List<KeyValuePair<string, string>> Attributes { get; private set; }
public MyClass() {
Attributes = new List<KeyValuePair<string, string>();
}
public void AddAttribute(string key, string value) {
Attributes.Add(new KeyValuePair<string, string>(key, value));
}
}
// to be used like this:
MyClass instance = new MyClass();
instance.AddAttribute("Email", "[email protected]");
instance.AddAttribute("Phone", "555-1234");
Dictionary<string, string> would be a good choice, too.someDictionary.ContainsKey("Email")If you have c# 4.0 you can use the Expando object.
for earlier versions of c#, the generally accepted way of doing this is to create a "property bag" i.e. a collection (or dictionary) of key value pairs
dynamic foo = new ExpandoObject();
foo.Bar = "test";
you could add an dictionary with for your Key/Value-Pairs.
Then if you add your attributes you just add Key = Attributename, Value = YourValue to the dictionary.
Reading is as easy - just get the Value to the Key = Attributename from your dictionary.
